I've received the O'rings I ordered on Aliexpress in this shop (not affiliated, feel free to order where you want): https://www.aliexpress.com/item/1005003221596187.html?spm=a2g0o.order_detail.order_detail_item.7.75727d56REOAVI&gatewayAdapt=glo2fra I've chosen 2 types: OD 8mm ID 4mm (CS 2.0mm) O...

Hello, I've read this topic after searching the same information and here is what I've found: https://do-it-up.com/stuff/welding/tig/welder-consumables/orings/ I don't know if the dimensions are exact, I've ordered 2 types of o'rings for a WP-20 and will try them. Hope it'll help some people in the ...